[INFO] cloning repository https://github.com/ARelaxedScholar/rusty_micrograd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ARelaxedScholar/rusty_micrograd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FARelaxedScholar%2Frusty_micrograd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FARelaxedScholar%2Frusty_micrograd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7bba0d6e8d7f76a569ae15d1ae6242de2237d4cd
[INFO] checking ARelaxedScholar/rusty_micrograd against master#a26e97be8826d408309fffbd8168362365719f50 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FARelaxedScholar%2Frusty_micrograd" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ARelaxedScholar/rusty_micrograd on toolchain a26e97be8826d408309fffbd8168362365719f50
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ARelaxedScholar/rusty_micrograd
[INFO] finished tweaking git repo https://github.com/ARelaxedScholar/rusty_micrograd
[INFO] tweaked toml for git repo https://github.com/ARelaxedScholar/rusty_micrograd written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ARelaxedScholar/rusty_micrograd already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe035baf4c5f541bcf8b409ffabdf9cbc34d2479851593bd0d2efacd3b2d1996
[INFO] running `Command { std: "docker" "start" "-a" "fe035baf4c5f541bcf8b409ffabdf9cbc34d2479851593bd0d2efacd3b2d1996", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe035baf4c5f541bcf8b409ffabdf9cbc34d2479851593bd0d2efacd3b2d1996", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe035baf4c5f541bcf8b409ffabdf9cbc34d2479851593bd0d2efacd3b2d1996", kill_on_drop: false }`
[INFO] [stdout] fe035baf4c5f541bcf8b409ffabdf9cbc34d2479851593bd0d2efacd3b2d1996
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9462e18634793b2218b017147beb9fb91f59c73f24e6b8c8a91ae676504e83f
[INFO] running `Command { std: "docker" "start" "-a" "d9462e18634793b2218b017147beb9fb91f59c73f24e6b8c8a91ae676504e83f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rusty_micrograd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `gradient` and `operation` are never read
[INFO] [stdout]   --> src/engine.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub struct InnerValue {
[INFO] [stdout]    |                ---------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |         gradient : f64,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 20 |         operation: Operation
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `InnerValue` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/engine.rs:25:18
[INFO] [stdout]    |
[INFO] [stdout] 25 |         Addition(Value, Value),
[INFO] [stdout]    |         -------- ^^^^^  ^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Operation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 25 |         Addition((), ()),
[INFO] [stdout]    |                  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/engine.rs:26:24
[INFO] [stdout]    |
[INFO] [stdout] 26 |         Multiplication(Value, Value),
[INFO] [stdout]    |         -------------- ^^^^^  ^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Operation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 26 |         Multiplication((), ()),
[INFO] [stdout]    |                        ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/engine.rs:27:15
[INFO] [stdout]    |
[INFO] [stdout] 27 |         Power(Value, Exponent),
[INFO] [stdout]    |         ----- ^^^^^  ^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Operation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 27 |         Power((), ()),
[INFO] [stdout]    |               ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/engine.rs:28:14
[INFO] [stdout]    |
[INFO] [stdout] 28 |         Tanh(Value),
[INFO] [stdout]    |         ---- ^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Operation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 28 |         Tanh(()),
[INFO] [stdout]    |              ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/engine.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         Exp(Value),
[INFO] [stdout]    |         --- ^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Operation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 29 |         Exp(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `backwards`, `yield_topographic_ordering`, and `inner_backwards` are never used
[INFO] [stdout]    --> src/engine.rs:65:16
[INFO] [stdout]     |
[INFO] [stdout] 46  |     impl Value {
[INFO] [stdout]     |     ---------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 65  |         pub fn backwards(&mut self){
[INFO] [stdout]     |                ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81  |         fn yield_topographic_ordering(node: &Self, seen_values : &mut HashSet<usize>, current_ordering : &mut VecDeque<Self>) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |         fn inner_backwards(&mut self){
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `exp` is never used
[INFO] [stdout]    --> src/engine.rs:163:12
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub trait Exp{
[INFO] [stdout]     |               --- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 163 |         fn exp(self) -> Self::Output;
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_parameters` is never used
[INFO] [stdout]   --> src/neural_network.rs:43:16
[INFO] [stdout]    |
[INFO] [stdout] 12 |     impl Neuron{
[INFO] [stdout]    |     ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 43 |         pub fn get_parameters(&self) -> Vec<Value>{
[INFO] [stdout]    |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_parameters` is never used
[INFO] [stdout]   --> src/neural_network.rs:72:16
[INFO] [stdout]    |
[INFO] [stdout] 53 |     impl Layer{
[INFO] [stdout]    |     ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 72 |         pub fn get_parameters(&self) -> Vec<Value>{
[INFO] [stdout]    |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_parameters` is never used
[INFO] [stdout]    --> src/neural_network.rs:113:16
[INFO] [stdout]     |
[INFO] [stdout] 86  |     impl MultiLayerPerceptron{
[INFO] [stdout]     |     ------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 113 |         pub fn get_parameters(&self) -> Vec<Value>{
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `gradient` and `operation` are never read
[INFO] [stdout]   --> src/engine.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub struct InnerValue {
[INFO] [stdout]    |                ---------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |         gradient : f64,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 20 |         operation: Operation
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `InnerValue` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/engine.rs:25:18
[INFO] [stdout]    |
[INFO] [stdout] 25 |         Addition(Value, Value),
[INFO] [stdout]    |         -------- ^^^^^  ^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Operation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 25 |         Addition((), ()),
[INFO] [stdout]    |                  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/engine.rs:26:24
[INFO] [stdout]    |
[INFO] [stdout] 26 |         Multiplication(Value, Value),
[INFO] [stdout]    |         -------------- ^^^^^  ^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Operation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 26 |         Multiplication((), ()),
[INFO] [stdout]    |                        ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/engine.rs:27:15
[INFO] [stdout]    |
[INFO] [stdout] 27 |         Power(Value, Exponent),
[INFO] [stdout]    |         ----- ^^^^^  ^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Operation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 27 |         Power((), ()),
[INFO] [stdout]    |               ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/engine.rs:28:14
[INFO] [stdout]    |
[INFO] [stdout] 28 |         Tanh(Value),
[INFO] [stdout]    |         ---- ^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Operation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 28 |         Tanh(()),
[INFO] [stdout]    |              ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/engine.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         Exp(Value),
[INFO] [stdout]    |         --- ^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Operation` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 29 |         Exp(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `backwards`, `yield_topographic_ordering`, and `inner_backwards` are never used
[INFO] [stdout]    --> src/engine.rs:65:16
[INFO] [stdout]     |
[INFO] [stdout] 46  |     impl Value {
[INFO] [stdout]     |     ---------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 65  |         pub fn backwards(&mut self){
[INFO] [stdout]     |                ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81  |         fn yield_topographic_ordering(node: &Self, seen_values : &mut HashSet<usize>, current_ordering : &mut VecDeque<Self>) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |         fn inner_backwards(&mut self){
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `exp` is never used
[INFO] [stdout]    --> src/engine.rs:163:12
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub trait Exp{
[INFO] [stdout]     |               --- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 163 |         fn exp(self) -> Self::Output;
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_parameters` is never used
[INFO] [stdout]   --> src/neural_network.rs:43:16
[INFO] [stdout]    |
[INFO] [stdout] 12 |     impl Neuron{
[INFO] [stdout]    |     ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 43 |         pub fn get_parameters(&self) -> Vec<Value>{
[INFO] [stdout]    |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_parameters` is never used
[INFO] [stdout]   --> src/neural_network.rs:72:16
[INFO] [stdout]    |
[INFO] [stdout] 53 |     impl Layer{
[INFO] [stdout]    |     ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 72 |         pub fn get_parameters(&self) -> Vec<Value>{
[INFO] [stdout]    |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_parameters` is never used
[INFO] [stdout]    --> src/neural_network.rs:113:16
[INFO] [stdout]     |
[INFO] [stdout] 86  |     impl MultiLayerPerceptron{
[INFO] [stdout]     |     ------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 113 |         pub fn get_parameters(&self) -> Vec<Value>{
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.70s
[INFO] running `Command { std: "docker" "inspect" "d9462e18634793b2218b017147beb9fb91f59c73f24e6b8c8a91ae676504e83f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9462e18634793b2218b017147beb9fb91f59c73f24e6b8c8a91ae676504e83f", kill_on_drop: false }`
[INFO] [stdout] d9462e18634793b2218b017147beb9fb91f59c73f24e6b8c8a91ae676504e83f
